feat: update readme

README.md

@@ -12,40 +12,31 @@
 
 ## Setup
 
-1. Clone this repository and navigate into the directory.
+### 1. Clone this repository and navigate into the directory.
 
-2. Start the services:
+### 2. Start the services:
 ```bash
 docker compose up -d
 ```
 
-3. Trust the Step-CA root certificate:
+### 3. Trust the Step-CA root certificate:
+
+Download the `roots.pem` from [https://localhost:9000/roots.pem](https://localhost:9000/roots.pem) and trust it on your system. 
+This is necessary for the certificates to be trusted by your browser.
+
+#### Linux
 ```bash
-# Linux
-curl -k https://localhost:9000/roots.pem -o roots.pem
 sudo trust anchor --store roots.pem
-rm roots.pem
 ```
 
-### Linux
-```bash
-curl -k https://localhost:9000/roots.pem -o roots.pem
-sudo trust anchor --store roots.pem
-rm roots.pem
-```
-
-### Windows
+#### Windows
 ```powershell
-Invoke-WebRequest -Uri "https://localhost:9000/roots.pem" -OutFile "roots.pem"
 Import-Certificate -FilePath "roots.pem" -CertStoreLocation "Cert:\LocalMachine\Root"
-Remove-Item "roots.pem"
 ```
 
-### macOS
+#### macOS
 ```bash
-curl -k https://localhost:9000/roots.pem -o roots.pem
 sudo security add-trusted-cert -d -r trustRoot -k /Library/Keychains/System.keychain roots.pem
-rm roots.pem
 ```
 
 ## How to Use